| 摘要 |
PROBLEM TO BE SOLVED: To obtain an electronic expansion valve adjustable to a refrigerant flow rate compatible with air conditioners of various capacities.SOLUTION: An electronic expansion valve needle part 7 has a needle minimum taper angle (&thetas;3) part 7a, a needle middle taper angle (&thetas;2) part 7b, and a needle maximum taper angle (&thetas;1) part 7c, at a tip portion thereof, wherein a three-layer structure is employed which has a different taper angle, respectively. |
